Proxies SX, sold at proxies.sx, is an agent-friendly proxy seller: its x402 checkout lets an agent buy a mobile port with no account from $0.40, and its MCP server asks before it spends. Its live stock is mostly residential, though, so an agent that needs a carrier IP should filter for mobile or rent a private modem. This Proxies.sx review checks its pricing, docs, package files and live stock counter as they stood on October 30, 2026, then looks at where a dedicated setup fits better.
Key takeaways
- Proxies.sx sells a shared pool from $4/GB, falling to $2.40/GB at 250 GB or more, and private carrier modems from $8 a day, $25 a week or $107 a month with unlimited traffic.
- Its strongest agent feature is x402: an agent with a USDC wallet buys a mobile proxy port in one paid request, with no account, from $0.40.
- When checked on October 30, 2026, its live stock counter showed 1,765 devices on sale: 1,510 residential and 247 mobile, including 121 carrier modems the company runs in six countries.
- Its MCP server is carefully built, with a 20-tool default set and confirmation before any spend, but its pages quote tool counts from 20 to 112 without always saying why.
- For an agent that needs one carrier IP for weeks with UDP, OpenVPN and VLESS/Xray, a dedicated VoidMob mobile device is the Proxies SX alternative.
Proxies.sx at a Glance
Everything below comes from proxies.sx pages and the published MCP package, checked October 30, 2026. Prices exclude any taxes.
| Area | Proxies.sx |
|---|---|
| Products | Shared per-GB pool, Pool Gateway, private carrier modems |
| Shared pool price | $4/GB list, $2.40/GB at 250 GB or more, bandwidth never expires |
| Pool Gateway tiers | Per GB of traffic: Standard $0.75, Plus $1.50, Premium $4, by country |
| Private modems | From $8/day, $25/week, $107/month, unlimited traffic |
| Modem countries | US, UK, Germany, Netherlands, Poland, Georgia, Singapore, Brazil |
| Protocols | HTTP and SOCKS5; OpenVPN on supported modem lines |
| Rotation | API, rotation link or timer; 5-minute cooldown between port rotations |
| OS fingerprint | Some lines, from the values each line accepts |
| Agent access | x402 (USDC on Base or Solana), REST API, MCP server |
| Payments | Cards and 50+ cryptocurrencies |
| Concurrent connections | 5 at signup, up to 80 at 500 GB lifetime |
Pricing: Shared Pool, Pool Gateway and Private Modems
The Proxies.sx pricing page sells traffic from one balance at $4/GB, with automatic discounts of 10% at 25 GB ($3.60), 20% at 50 GB ($3.20), 30% at 100 GB ($2.80) and 40% from 250 GB ($2.40). Bandwidth never expires, and there are no monthly fees. Concurrent connections grow with lifetime GB purchased, from 5 at signup to 80 once you pass 500 GB.
The country tier decides how far a GB of balance goes. On Pool Gateway, a single endpoint that targets countries through the username, one GB of balance carries 5.33 GB of traffic in Standard countries, 2.67 GB in Plus and 1 GB in Premium. That works out to $0.75, $1.50 and $4 per GB of traffic before volume discounts. Standard's largest stock sits in Iraq, India and Mexico, while Premium holds the US, Poland and Canada. Check which tier your target country falls in before you top up, because the same balance buys very different amounts of traffic.
Dedicated access comes as a private modem, one 4G/5G carrier device rented to you alone from $8 a day, $25 a week or $107 a month, with unlimited traffic and its own credentials. Carriers on the sales list include T-Mobile and Verizon in the US, Vodafone, O2 and 1&1 in Germany, Three in the UK, Play in Poland and Singtel in Singapore. Rotation runs from the panel, a private link or a timer as short as one minute, and the carrier assigns each new IP, so a rotation can land on an address you used before. OpenVPN works on supported lines, and OS fingerprint control works on some lines, with one change every five minutes.
The Agentic Proxies Layer: x402 and MCP
Agentic proxies are proxies an AI agent can buy, configure, rotate and release on its own, inside limits a person sets. There are two parts to this layer on Proxies.sx.
The first is x402, the open payment standard Coinbase introduced in May 2025 on top of the HTTP 402 Payment Required status code. An agent requests a proxy with a country, duration and traffic amount, receives a 402 with the price, pays in USDC on Base or Solana, and retries with the payment signature. The response carries HTTP and SOCKS5 credentials, a rotation URL and a session token. According to its x402 page, the port costs $4/GB with no port fee, the minimum buy is 0.1 GB ($0.40), sessions last from one hour to 30 days, and rotations need five minutes between them. Private modems are not sold over x402; buying one needs an account balance and an API key with a purchase scope. For how the protocol fits into agent shopping and checkout flows, see AI agent commerce protocols.
The second is an MCP server, published as @proxies-sx/mcp-server under an MIT license. Version 3.2.0 lists 20 tools by default, grouped into buy, use and manage, with the full set behind a flag. Any tool that spends money does nothing until the agent passes a confirmation the user approved, top-ups carry a daily cap that defaults to $100, and modem purchases need an opt-in scope. That is careful design. Consistency is weaker in the documentation: tool counts run from 20 to 112 depending on the key type and the page, and the pages do not always say which count they mean. The package README lists 112 tools across all key types, while proxies.sx pages quote figures such as 96 and 45.
For agents running on cloud servers, the IP type is one of the first signals sites use to classify them. Datacenter and cloud addresses are often flagged as bots before the agent does anything, which is why proxies for AI agents usually mean carrier IPs. Check what your own connection presents:
What does your IP reveal right now?
What the Live Stock Counter Shows
Proxies.sx publishes a live stock counter on its homepage, and it is the most useful number on the site. It changes through the day, so treat the figures here as a snapshot from October 30, 2026: 1,765 devices on sale in 99 countries, mostly residential (1,510 residential and 247 mobile).
Of those 247 mobile devices, 121 are carrier modems the company operates in the United States, France, the Netherlands, the United Kingdom, Georgia and Poland. Its country lists change often, so treat the ones here as a snapshot of October 30 and confirm in the dashboard before you buy. Alongside its own modems, the company runs a peer SDK, through which device owners share their bandwidth and earn per GB served. The site states plainly that counts are devices in a shared pool rather than reserved addresses, and that most stock is residential and outside the US and Western Europe.
Marketing leads with 4G/5G, while the stock is mostly residential. That is fine for broad, low-cost coverage. For an agent that needs a carrier IP specifically, filter for mobile stock or rent a private modem.
Proxies SX Reviews and Trust Signals
Most pages that rank for Proxies SX reviews are promotional listings from tool vendors and hosts, several with promo codes, and none of those listings publishes test results. Reviews of SX.ORG, a different proxy site at sx.org, also surface in the same searches, so check the domain before trusting a rating.
On its own pages, the signals are mixed. In its favor: detailed API docs, an open-source MCP server, a public stock counter, cards plus 50+ cryptocurrencies, and bandwidth that never expires. Against it: figures such as country coverage and MCP tool counts differ from page to page, and the site states no company location, with support through email and Telegram. An $SX token is also described on the homepage, which it calls "a meme token today" that carries no company shares, revenue or service credits.
Proxies.sx Review Verdict
Proxies.sx fits three jobs well. Agents that cannot hold an account can buy a mobile proxy port over x402 in one paid request. Teams that want wide, low-cost country coverage get it through Pool Gateway's Standard tier. Developers who want a guarded MCP server get confirmations, scopes and a daily cap out of the box.
It fits less well when the agent needs one carrier identity for weeks. Private modems cover only eight countries, OS fingerprint control and OpenVPN exist only on some lines, shared ports rotate no faster than every five minutes, and neither UDP nor VLESS appears in the docs and product pages checked. Most of the pool is residential by device count.
A Proxies SX Alternative for Dedicated Agent Work
VoidMob sells only mobile proxies: carrier IPs, with no residential or datacenter pool. A dedicated mobile device is reserved to you for the term with unlimited data, and its IP holds until you rotate it from the dashboard, a rotation link, the API or an agent, or until the carrier reassigns it. Every plan carries UDP and dedicated devices add OpenVPN. Premium adds VLESS/Xray tunnels and a dedicated DNS resolver. p0f control, which presents a Windows, macOS, iPhone or Android TCP/IP signature, comes on every Premium plan and on Standard plans tagged p0f.
Agents manage it through the open-source VoidMob MCP server: 30 tools that run in Claude Code, Codex, Cursor and Gemini CLI, with setup guides for OpenClaw, Hermes Agent and Grok Bot. An agent can manage dedicated devices through it, from buying to rotating the IP, under a per-order cap and a session budget you set, with a read-only mode and a sandbox for testing (Premium plans are managed in the dashboard, apart from IP rotation). VoidMob does not offer x402. Agents work from a prepaid balance: a person creates the API key and tops the balance up with crypto in the dashboard, and the balance is the account-wide limit.
| Agent infrastructure | Proxies.sx | VoidMob |
|---|---|---|
| Dedicated mobile device | Private modems, 8 countries on the sale list | Dedicated 4G/5G devices, unlimited data |
| Protocols | HTTP, SOCKS5; OpenVPN on supported lines | HTTP, SOCKS5 with UDP; OpenVPN on dedicated; VLESS/Xray on Premium |
| OS fingerprint (p0f) | Some lines, one change per 5 minutes | p0f-tagged plans and every Premium plan, one change per 5 minutes |
| DNS | Not listed | Dedicated resolver on Premium |
| Shared pool | Mostly residential by stock count | Mobile carrier IPs only |
| Agent payments | x402 with no account, or account balance | Prepaid balance via API or MCP |
| Payment methods | Cards and 50+ cryptocurrencies | Prepaid balance topped up with crypto |
| MCP guardrails | Spend confirmation, scopes, daily top-up cap | Approved price on every buy, per-order cap, session budget, read-only, sandbox |
Give your agent a dedicated carrier IP
Rent a dedicated 4G/5G mobile device with unlimited data, or start with pay-per-GB shared mobile proxies.
FAQ
Is Proxies.sx legit?
Proxies.sx publishes detailed API docs, an MIT-licensed MCP server on npm and a live stock counter, accepts cards and 50+ cryptocurrencies, and lets bandwidth roll over without expiry. Its site states no company location, and several figures conflict between pages, including country counts and MCP tool counts. Start with a small balance and verify the country and IP type you need before scaling.
Where can I find honest Proxies SX reviews?
Most pages ranking for Proxies SX reviews are promotional listings from tool vendors and hosts, several with promo codes, and none of them publishes test results. Reviews of SX.ORG, a different proxy site at sx.org, appear in the same searches. More reliable data comes from Proxies.sx's own live stock counter, pricing page and docs, checked on the day you buy.
How much does Proxies.sx cost?
As of October 30, 2026, shared traffic costs $4/GB, with automatic discounts down to $2.40/GB from 250 GB, and bandwidth never expires. Pool Gateway prices traffic by country tier at $0.75, $1.50 or $4 per GB. Private modems start at $8 a day, $25 a week or $107 a month with unlimited traffic. Over x402, the minimum buy is 0.1 GB for $0.40.
Are Proxies.sx proxies mobile or residential?
Both, and mostly residential. On October 30, 2026, its live stock counter showed 1,765 devices on sale, 1,510 residential and 247 mobile, with 121 of the mobile devices being carrier modems the company operates in six countries. Every private modem is a carrier 4G/5G device.
Does Proxies.sx support x402?
Yes. An agent requests a proxy, receives an HTTP 402 with the price, pays in USDC on Base or Solana and retries with the payment signature to receive credentials, with no account or API key. x402 sells shared mobile ports at $4/GB from 0.1 GB, for sessions of one hour to 30 days. Private modems are not available over x402.
What are agentic proxies?
Agentic proxies are proxies an AI agent can buy, configure, rotate and release on its own through an API, an MCP server or a payment protocol such as x402, within spending limits a person sets. Even then, the IP type is one of the first signals sites use to classify the agent, so carrier mobile IPs are the usual choice for agents that log in or browse protected sites.
Is Proxies.sx the same as SX.ORG?
No. Proxies.sx and SX.ORG are different proxy sites, at proxies.sx and sx.org. Search results for Proxies SX reviews mix the two, so check the domain on any review, rating or promo code before you rely on it.
What is the best Proxies SX alternative for AI agents?
For agents that need one carrier IP for weeks, a dedicated mobile device fits better than a shared pool. VoidMob rents dedicated 4G/5G devices with unlimited data and UDP on every plan, OpenVPN on dedicated and VLESS/Xray on Premium. An agent can manage dedicated devices through the open-source MCP server under a per-order cap and a session budget (Premium plans are managed in the dashboard, apart from IP rotation). When an agent must buy with no account at all, Proxies.sx is the one built for it.
Bottom line: Proxies.sx is built for agents that must buy proxy access without an account, and is a weaker fit for long-running agents that need one carrier IP with UDP, VLESS/Xray and fingerprint control.